package com.sky.controller.admin;

import com.sky.constant.MessageConstant;
import com.sky.utils.AliOssUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.sky.result.Result;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.util.UUID;

/**
 * 通用接口， 上传文件
 */
@RestController
@RequestMapping("/admin/common")
@Api(tags = "通用接口")
@Slf4j
public class CommonController {

    private final AliOssUtil aliOssUtil;
    @Autowired
    public CommonController(AliOssUtil aliOssUtil){
        this.aliOssUtil = aliOssUtil;
    }

    @PostMapping("/upload")
    @ApiOperation(value = "文件上传")
    public Result<String> upload(MultipartFile file) {
        log.info("文件上传：{}", file);

        try {
            //原始文件名
            String originalFilename = file.getOriginalFilename();

            //截取文件原始文件名的后缀
            //断言 originalFilename 不为null。如果 originalFilename 为null，那么程序将抛出一个断言异常
            assert originalFilename != null;
            String extension = originalFilename.substring(originalFilename.lastIndexOf("."));

            //构建新的文件名称
            String objectName = UUID.randomUUID() + extension;

            //文件的请求路径
            String filePath = aliOssUtil.upload(file.getBytes(), objectName);
            return Result.success(filePath);
        } catch (IOException e) {
            log.error("文件上传失败: {}", e.getMessage());
        }
        return Result.error(MessageConstant.UPLOAD_FAILED);
    }
}
